Randall David "Randy" Johnson (born September 10, 1963), nicknamed "The Big Unit", is an American former left-handed pitcher in Major League Baseball who played from 1988 to 2009 for six teams, primarily the Seattle Mariners and Arizona Diamondbacks. His 303 career victories rank as the fifth-most by a lefthander in major league history, while his 4,875 strikeouts place him second all-time behind Nolan Ryan and are the most by a lefthander. He holds five of the seven highest single-season strikeout totals by a lefthander in modern history. Johnson won the Cy Young Award five times, second only to Roger Clemens' seven; he is one of two pitchers to win the award four consecutive times (1999-2002), and in 1999 – along with Pedro Martínez – joined Gaylord Perry in the rare feat of winning the award in both the American and National Leagues. He is also one of five pitchers to hurl no-hitters in both leagues; with the second no-hitter, in 2004, he became the oldest pitcher in major league history to throw a perfect game. He is one of the few pitchers in history to record a win against all 30 MLB franchises.